Ignition problems of the 1997 Toyota RAV4

My rav 4 has had a very costly and difficult-to-fix electrical problem the last 3 months. Sometimes it starts right up, but it has also had stalling problems and once died completely. Three different mechanics have worked on it and nobody has yet been able to correct the problem completely. It has always come back. The dealership even said that it has to fail completely again before they can attempt to know what's wrong. That means I will have to wait to be stranded until someone can maybe fix the vehicle. I may be forced to sell the vehicle for parts way before I should for a car of that age and mileage.